<template>
<transition name="move">
  <div class="food" v-show="showFlag" ref="food">
    <div class="food-content">
      <div class="image-header">
        <img :src="food.image" alt="">
        <div class="back">
          <i class="icon-arrow_lift" @click="hideFood"></i>
        </div>
      </div>
      <div class="content">
        <h1 class="title">{{ food.name }}</h1>
        <div class="detail">
          <span class="sell-count">月售{{ food.sellCount }}份</span>
          <span class="rating">好评率{{ food.rating }}%</span>
        </div>
        <div class="price">
          <span class="now">￥{{ food.price }}</span>
          <span class="old"  v-show="food.oldPrice">￥{{ food.oldPrice }}</span>
        </div>
        <div class="cartcontrol-wrapper">
          <cartcontrol :food="food"></cartcontrol>
        </div>
        <div v-show="!food.count || food.count === 0" class="buy" @click.stop.prevent="addFirst">加入购物车</div>
      </div>
      <split v-show="food.info"></split>
      <div class="info" v-show="food.info">
        <h1 class="title">商品信息</h1>
        <p class="text">{{ food.info }}</p>
      </div>
      <split></split>
      <div class="rating">
        <h1 class="title">商品评价</h1>
        <ratingselect :select-type="selectType" :only-content="onlyContent" :desc="desc" :ratings="food.ratings"></ratingselect>
        <div class="rating-wrapper">
          <ul v-show="food.ratings && food.ratings.length">
            <li v-show="needShow(rating.rateType, rating.text)" v-for="(rating, index) in food.ratings" :key="index" class="rating-item">
              <div class="user">
                <span class="name">{{rating.username}}</span>
                <img :src="rating.avatar" class="avatar" width="12" height="12">
              </div>
              <div class="time">{{rating.rateTime | formatDate}}</div>
              <div class="text">
                <span :class="{'icon-thumb_up': rating.rateType === 0, 'icon-thumb_down': rating.rateType === 1}"></span>{{rating.text }}
              </div>
            </li>
          </ul>
          <div class="no-rating" v-show="!food.ratings || !food.ratings.length"></div>
        </div>
      </div>
    </div>
  </div>
</transition>
</template>
<script>
import cartcontrol from 'components/cartcontrol/cartcontrol'
import Vue from 'vue'
import Bus from '../../common/js/eventBus'
import split from 'components/split/split'
import BScroll from 'better-scroll'
import ratingselect from 'components/ratingselect/ratingselect'
import { formatDate } from 'common/js/data'

// const POSITIVE = 0;
// const NEGATIVE = 1;
const ALL = 2

export default {
  data() {
    return {
      showFlag: false,
      selectType: ALL,
      onlyContent: true,
      desc: {
        all: '全部',
        positive: '推荐',
        negative: '吐槽'
      }
    }
  },
  props: {
    food: {
      type: Object
    }
  },
  methods: {
    // 提供给父组件一个方法，可以让他显示出来
    show() {
      this.showFlag = true
      this.$nextTick(() => {
        if (!this.scroll) {
          this.scroll = new BScroll(this.$refs.food, {
            click: true
          })
        } else {
          this.scroll.refresh()
        }
      })
    },
    hideFood() {
      console.log('点击了back按钮')
      this.showFlag = false
    },
    addFirst() {
      Bus.$emit('cart.add', event.target)
      Vue.set(this.food, 'count', 1)
    },
    needShow(type, text) {
      if (this.onlyContent && !text) {
        return false
      }
      if (this.selectType === ALL) {
        return true
      } else {
        return type === this.selectType
      }
    }
  },
  components: {
    cartcontrol,
    split,
    ratingselect
  },
  created() {
    Bus.$on('ratingtype.select', selectType => {
      this.selectType = selectType
      this.$nextTick(() => {
        this.scroll.refresh()
      })
    })
    Bus.$on('content.toggle', onlyContent => {
      this.onlyContent = onlyContent
      this.$nextTick(() => {
        this.scroll.refresh()
      })
    })
  },
  filters: {
    formatDate(time) {
      let date = new Date(time)
      return formatDate(date, 'yyyy-MM-dd hh:mm')
    }
  }
}
</script>
<style lang="scss" scoped>
@import "../../common/scss/mixins";

.food {
  position: fixed;
  top: 0;
  bottom: 48px;
  left: 0;
  z-index: 30;
  background-color: #fff;
  width: 100%;
  &.move-enter,
  &.move-leave-to {
    transform: translate3d(100%, 0, 0);
  }
  &.move-enter-active,
  &.move-leave-active {
    transition: all 0.2s linear;
  }
  .food-content {
    .image-header {
      position: relative;
      width: 100%;
      height: 0;
      padding-top: 100%;
      img {
        position: absolute;
        width: 100%;
        height: 100%;
        left: 0;
        top: 0;
      }
      .back {
        position: absolute;
        top: 10px;
        left: 0;
        .icon-arrow_lift {
          display: block;
          padding: 10px;
          font-size: 20px;
          color: #fff;
        }
      }
    }
    .content {
      padding: 18px;
      position: relative;
      .title {
        line-height: 14px;
        margin-bottom: 8px;
        font-size: 14px;
        font-weight: 700;
        color: rgb(7, 17, 27);
      }
      .detail {
        margin-bottom: 18px;
        line-height: 10px;
        height: 10px;
        font-size: 0;
        .sell-count,
        .rating {
          font-size: 10px;
          color: rgb(147, 153, 159);
        }
        .sell-count {
          margin-right: 12px;
        }
      }
      .price {
        font-weight: 700;
        line-height: 24px;
        .now {
          margin-right: 8px;
          font-size: 14px;
          color: rgb(240, 20, 20);
        }
        .old {
          text-decoration: line-through;
          font-size: 10px;
          color: rgb(147, 153, 159);
        }
      }
      .cartcontrol-wrapper {
        position: absolute;
        right: 12px;
        bottom: 12px;
      }
      .buy {
        position: absolute;
        right: 18px;
        bottom: 18px;
        z-index: 10;
        height: 24px;
        line-height: 24px;
        padding: 0 12px;
        box-sizing: border-box;
        border-radius: 12px;
        font-size: 10px;
        color: #fff;
        background-color: rgb(0, 160, 220);
      }
    }
    .info {
      padding: 18px;
      .title {
        line-height: 14px;
        margin-bottom: 6px;
        font-size: 14px;
        color: rgb(7, 17, 27);
      }
      .text {
        line-height: 24px;
        padding: 0 8px;
        font-size: 12px;
        color: rgb(77, 85, 93);
      }
    }
    .rating {
      padding-top: 18px;
      .title {
        line-height: 14px;
        margin-left: 18px;
        font-size: 14px;
        color: rgb(7, 17, 27);
      }
      .rating-wrapper {
        padding: 0 18px;
        .rating-item {
          position: relative;
          padding: 16px 0;
          @include border-1px(rgba(7, 17, 27, 0.1));
          .user {
            position: absolute;
            right: 0;
            top: 16px;
            line-height: 12px;
            font-size: 0;
            .name {
              display: inline-block;
              vertical-align: top;
              margin-right: 6px;
              font-size: 10px;
              color: rgb(147, 153, 159);
            }
            .avatar {
              border-radius: 50%;
            }
          }
          .time {
            margin-bottom: 6px;
            line-height: 12px;
            font-size: 10px;
            color: rgb(147, 153, 159);
          }
          .text {
            line-height: 16px;
            font-size: 12px;
            color: rgb(7, 17, 27);
            .icon-thumb_up,
            .icon-thumb_down {
              margin-right: 4px;
              line-height: 16px;
              font-size: 12px;
            }
            .icon-thumb_up {
              color: rgb(0, 160, 220);
            }
            .icon-thumb_down {
              color: rgb(147, 153, 159);
            }
          }
        }
        .no-rating {
          padding: 16px 0;
          font-size: 12px;
          color: rgb(147, 153, 159);
        }
      }
    }
  }
}
</style>
